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当前位置: 首页 > 文章 > 京津冀地区耕地质量等别空间差异分析 农业机械学报 2017,48 (2) 150-157
Position: Home > Articles > Space Difference Analysis of Cultivated Land Quality Grade in Beijing-Tianjin-Hebei Region Transactions of the Chinese Society for Agricultural Machinery 2017,48 (2) 150-157

京津冀地区耕地质量等别空间差异分析

作  者：
李鹏山;杜振博;张超;郧文聚;杨建宇;朱德海
单  位：
国土资源部农用地质量与监控重点实验室;中国农业大学信息与电气工程学院
关键词：
京津冀地区;耕地质量等别;空间差异;因素指标区;均值二分法
摘  要：
利用2013年耕地质量等别县级年度更新数据,采用面积加权平均法,计算各因素指标区的耕地平均等别;采用均值二分法,计算各指标区内各耕地地块等别与平均等别之间的离差;采用等别方差,计算各县(区)利用等的离散程度。研究结果表明:各因素指标区平均等别均低于8等,大部分地区耕地质量等别低于全国平均水平的9.8等,北京平均水平略高于天津与河北;自然等的离差值域为-3.08~4.90,利用等的离差值域为-5.97~5.16,经济等的离差值域为-5.99~4.24,该地区80%以上的耕地等离差范围在±2等;各区县的耕地利用等方差值域为0~6.13,平原地区各区县的利用等方差较大,山地丘陵区和高原地区的各县利用等方差较小。通过空间差异分析表明,平原地区自然条件稍好,但其利用水平和经济效益差异较大;西部山区、北部山区和坝上高原区的耕地质量提升潜力较大,但自然条件和基础设施较差。
译  名：
Space Difference Analysis of Cultivated Land Quality Grade in Beijing-Tianjin-Hebei Region
作  者：
LI Pengshan;DU Zhenbo;ZHANG Chao;YUN Wenju;YANG Jianyu;ZHU Dehai;College of Information and Electrical Engineering,China Agricultural University;Key Laboratory for Agricultural Land Quality Monitoring and Control,Ministry of Land and Resources;
关键词：
Beijing-Tianjin-Hebei region;;cultivated land quality grade;;space difference;;factor index area;;mean dichotomy
摘  要：
Analyzing the characters of spatial distribution in cultivated land quality of Beijing-TianjinHebei region is important to protect and coordinate the development of regions. The mean grade in each index area was calculated with annual database of 2013 about the cultivated land quality by using the weighted average method. Moreover,the deviation between grades was calculated by mean dichotomy method and grade dispersions in each counties by variance. The results showed that the mean grades were under 8 and the cultivated land qualities were lower than the national average of 9. 8. Particularly,the average grade of Beijing was slightly higher than those of Tianjin and Hebei. Physical quality grade deviation was ranged from- 3. 08 to 4. 90,and utilization quality grade was ranged from- 5. 97 to5. 16,economic quality composition grade was ranged from- 5. 99 to 4. 24. The deviation of cultivated land quality grade for more than 80% of the region was within ± 2. The utilization quality grade variance was ranged from 0 to 6. 13. The plain areas had large variances and the plateau areas had small changes.The results of space difference analysis showed that the physical quality of cultivated land was slightly better than that of plain areas,but its utilization level and economic efficiency were obviously different.The western mountains area,northern mountains area and Bashang Plateau area had high potential to increase the cultivated land's qualities,although the natural condition and infrastructure should be enhanced. The mean dichotomy was proposed to set cultivated land quality goals after land consolidation.And the variance was put forward to divide land consolidation region,which can be a reference for choosing priority zoning. The research could be referred for well-facilitated farmland construction,improvement of medium or low-yield cultivated land and selection of priority zone.

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